An image of a right triangle is shown with an angle labeled x. If tan x° = e divided by 8 and sin x° = e divided by f, what is the value of cos x°?

A) cos x° = 8 divided by f
B) cos x° = f divided by 8
C) cos x° = 8f
D) cos x° = 8e

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?